Who dumped who?

So I initiated to break up with my boyfriend of 6 months. I just felt like I wasn't being a good girlfriend and this weird feeling of not being able to give him full on attention. I told him that I might not be ready for a relationship and he said to be honest I've been having doubts about this relationship. And that to not worry because he won't be heartbroken or anything. His response surprised me because I didn't expect him to say that. He then unfollowed me on ig and blocked me and he hasn't contacted me. I feel very confused because I feel like I've gotten dumped..